Editorial Note: This issue is part one in a three part series on the future of physical layers for RFID. In this part the following topics are covered: (1) Resurrection of the Esaki Diode: Tunneling Becomes Cool Again, and (2) Retrodirectivity for RFID: Orientation-Independent Tag Design with Gain.
Mohammad Alhassoun, Francesco Amato, Gregory D. Durgin
2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
This paper presents a new device for implementing a retrodirective backscatter modulator — an antenna + RF structure that reflects microwaves back to their source, while also adding information. The technique is extremely flexible and low-power, although only practical at microwave bands when the wavelength becomes several centimeters or shorter.
Blake Marshall defended his PhD dissertation entitled, “STAGGERED PATTERN ENERGY HARVESTING AND RETRO-DIRECTIVE BACKSCATTER FOR PASSIVE RFID TAGS” on Thursday, 12 December 2017. This work invented a new class of antenna structures that exhibit retrodirectivity and optimal energy harvesting parameters. Such structures are crucial to building next-generation internet-of-things nodes, which can harvest energy and backscatter information with extraordinarily low power. Blake was a graduate of the Rose-Hulman Institute of Technology and received his MS and PhD with the GTPG. For the last several years, Blake has worked at Apple Computer in the bay area. Somehow, he found time to finish his PhD and have his first child. [Read more…]